GHC 9.4.2 issue with running haddock on the project

[danwdart]

Is this really a GHC bug or is the splice really incorrect?

<no location info>: error:
    panic! (the 'impossible' happened)
  GHC version 9.4.2:
        hsExprType: Unexpected HsSpliceE
  unTypeCode (liftSplice . pure $ TExp verLifted_agFU)
  Call stack:
      CallStack (from HasCallStack):
        callStackDoc, called at compiler/GHC/Utils/Panic.hs:182:37 in ghc:GHC.Utils.Panic
        pprPanic, called at compiler/GHC/Hs/Syn/Type.hs:134:30 in ghc:GHC.Hs.Syn.Type

Please report this as a GHC bug:  https://www.haskell.org/ghc/reportabug

haddock: Cannot typecheck modules

Thanks!